.left{
	float: left;
}
.right{
	float: right;
}
/*头部*/
.header{
	width: auto;
	height: 63px;
	background-color: #252222;
}
.top{
	position: relative;
	left: 12%;
}
.top_bar{
	background: black;	
	height: 34px;
}
.top_menu_list{
	font-size: 18px;
	position: relative;
	left: 12%;
	top: 12%;
}
a:link{
	color: whitesmoke;
}
a:link{
	text-decoration: none;
}
/*头部结束*/
/*中间部分*/
body{
	background: #e6dede;
}
.neirong{
	border-top: 20px;
}
.content{
	width: 1400px;
	margin: 0 auto;
	background-color: white;
}
/*中间左部分*/
.left_content{
	width: 300px;
}
.zhenggao_big{
	height: 300px;
}
.zhenggao{
	width: 220px;
	background-color: red;
}
.zhenggao1{
	font-size: 23px;
	color: white;
	font-weight: bolder;
}
.zhenggao2{
	font-size: 18px;
	color: white;
}
.jingguan_big{
	height: 300px;
}
.jingguan{
	width: 220px;
	background-color: #252222;
}
.jingguan1{
	font-size: 23px;
	color: white;
	font-weight: bolder;
}
.jingguan2{
	font-size: 18px;
	color: white;
}
/*中间左部分结束*/
/*中间中部分*/
.mid_content_shang{
	display: flex;
}
.mid_content{
	position: relative;
	top: 20px;
	margin: 0 auto;
	width: 795px;
}
.jijian1{
	position: relative;
	height: 40px;
	left: 45%;
}
.jijian{
	margin-right: 20px;
	width: 250px;
	height: 290px;
	border: 1px solid darkgray;
}
.meishi1{
	position: relative;
	height: 40px;
	left: 45%;
}
.meishi{
	margin-right: 20px;
	width: 250px;
	height: 290px;
	border: 1px solid darkgray;
}
.yanwu1{
	position: relative;
	height: 40px;
	left: 45%;
}
.yanwu{
	width: 250px;
	height: 290px;
	border: 1px solid darkgray;
}
.mid_content_zhong{
	margin-top: 30px;
	display: flex;
}
/*中间中部分结束*/
/*右边部分*/
.right_content{
	display: flex;
	width: 250px;
	float: right;
}
.right_bar1{
	width: 280px;
	background: black;	
	height: 34px;
}
.zazhi{
	font-size: 18px;
	color: white;
}
.right_image{
	margin-left: 20px;
	margin-right: 20px;
	
}.image_bg{
	height: 300px;
	width: 280px;	
	background-color: #252222;
}
